NAICS 327332

Overview

The North American Industry Classification System (NAICS) is the federal standard for classifying business establishments to collect, analyze, and publish statistics about the U.S. economy. Developed under the Office of Management and Budget with partners in Canada and Mexico, NAICS replaced SIC in 1997 and is maintained in current 2022 vintage for statistical use. ¹
NAICS 327332 defines the U.S. industry for establishments primarily engaged in manufacturing concrete pipe. Within industry group 32733 (Concrete Pipe, Brick, and Block Manufacturing), this code is distinct from concrete block/brick and other concrete products; it captures production of concrete pipe as finished goods for sale. ²

See also on G2X:

• G2X — NAICS 327332 overview: https://app.g2xchange.com/naics/327332
• G2X — NAICS 327331: https://app.g2xchange.com/naics/327331
• G2X — NAICS 327390: https://app.g2xchange.com/naics/327390

What this NAICS covers

• Manufacturing of concrete pipe as finished products for sale. ²
• Production of precast concrete pipe used in sewer, stormwater, drainage, and culvert systems. Not specified by official sources ²
• Process steps integral to pipe production (e.g., casting, curing, finishing, reinforcing). Not specified by official sources ²
• Concrete pipe made to standard or customer specifications. Not specified by official sources ²
• Integrated manufacture of concrete pipe joints, bells, and accessories when part of the pipe production process. Not specified by official sources ²

Related NAICS and PSC codes

Type	Code	Descriptor
NAICS	327331	Concrete Block and Brick Manufacturing
NAICS	327390	Other Concrete Product Manufacturing
PSC	5630	Pipe and Conduit, Nonmetallic
PSC	4710	Pipe, Tube and Fittings

SBA small business size standard

• The SBA small business size standard for NAICS 327332 is 750 employees (effective March 17, 2023). ³

Key inclusions and exclusions (NAICS 2022 manual)

• Included: Manufacturing concrete pipe products. ²
• Excluded: Manufacturing concrete block and brick (use NAICS 327331). ²
• Excluded: Manufacturing other concrete products except block, brick, and pipe (use NAICS 327390). ²
• Excluded: Mixing and delivering ready-mix concrete (use NAICS 327320). ²
• Excluded: Manufacturing plastics pipe and pipe fittings (use NAICS 326122). ²

Frequently asked questions

• What does NAICS 327332 include?
  NAICS 327332 covers establishments primarily engaged in manufacturing concrete pipe. It is part of industry group 32733 and is separate from concrete block/brick and other concrete product manufacturing. ²

• Which PSCs commonly align with concrete pipe supply buys?
  For commodity purchases, agencies often use PSC 5630 (Pipe and Conduit, Nonmetallic) or PSC 4710 (Pipe, Tube and Fittings), depending on item specifics and material. Always confirm PSC selection against the solicitation’s description. ⁴

• Does NAICS 327332 cover installation of pipe at a job site?
  No. Installation and construction of water/sewer lines are classified under Construction sector codes such as NAICS 237110 Water and Sewer Line and Related Structures Construction. NAICS 327332 is limited to manufacturing. ⁵

• What is the current SBA small business size standard for NAICS 327332?
  The size standard is 750 employees, effective March 17, 2023. ³

• How does 327332 differ from 327390 and 327331?
  NAICS 327332 is only for concrete pipe. NAICS 327331 covers concrete block and brick, while NAICS 327390 covers other concrete products except block, brick, and pipe. ²

Useful resources

• G2X — NAICS 327332 page: https://app.g2xchange.com/naics/327332
• U.S. Census — NAICS overview and site (history, governance, 2022 vintage): https://www.census.gov/naics ¹
• U.S. Census — Sector 31–33 archive (includes NAICS 327332 definition and cross-references): https://www.census.gov/naics/resources/archives/sect31-33.html ²
• SBA — Table of Small Business Size Standards (effective March 17, 2023): https://www.sba.gov/sites/default/files/2023-06/Table%20of%20Size%20Standards_Effective%20March%2017%2C%202023%20%282%29.pdf ³
• Acquisition.gov — Product and Service Code (PSC) Manual: https://www.acquisition.gov/psc-manual ⁴

References

1. U.S. Census Bureau — North American Industry Classification System (NAICS) main page and introduction (adopted in 1997; current 2022 vintage). https://www.census.gov/naics
2. U.S. Census Bureau — NAICS Sector 31–33 archive page, including 32733 group and 327332 definition and cross-references. https://www.census.gov/naics/resources/archives/sect31-33.html
3. U.S. Small Business Administration — Table of Small Business Size Standards (effective March 17, 2023). https://www.sba.gov/sites/default/files/2023-06/Table%20of%20Size%20Standards_Effective%20March%2017%2C%202023%20%282%29.pdf
4. Acquisition.gov — Product and Service Code (PSC) Manual. https://www.acquisition.gov/psc-manual
5. U.S. Census Bureau — NAICS 237110 (2022): Water and Sewer Line and Related Structures Construction. https://www.census.gov/naics/?input=237110&year=2022